Problem 12: A long straight wire has a uniform charge density of 227 µC per meter. A long cylindrical shell with a radius of 2.25 cm and is centered on the wire. This shell has a uniform charge density of -227 uC per meter as seen from outside the shell. A second long cylindrical shell has a radius of 8.00 cm and is also centered on the wire. This second shell has a uniform charge density of 157 uC per meter as seen from outside the shell. Part (a) Calculate the Electric field (in N/C) a distance of r = 0.73 cm from the wire. E = Part (b) Calculate the Electric field (in N/C) a distance of ry = 3.77 cm from the wire. E = Part (c) Calculate the Electric field (in N/C) a distance of r3 = 9.15 cm from the wire. E =

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Atomic Number

Elements are the building blocks of all the matter that exist in the universe. Every element is made up of atoms that have protons, electrons, and a nucleus. In order to know the difference between the elements, an atomic number is used. Every element has its own individual atomic number. The atomic number is a single most important characteristic of an atom.